Daniel f



(No Model.) Y D.F.DALT0N.

EXTENSION BRACKET. v No. 455,707. Patented July 7,1891.

UNITED STATES PATENT OFFICE.

DANIEL F. DALTON, OF IVATERBURY, CONNECTICUT, ASSIGNOR TO THE CHAP- MAN Lb'ARMSTRONG MANUFACTURING COMPANY, OF SAMEPLACE.

EXTENSION-BRACKET.

SPECIFICATION. forming part of Letters Patent N o. 455,707', dated`July '7, 1891.

Application tiled March 23, 1891. Serial No. 385,972. (No model.)

To all whom it may concern:

Be it known that I, DANIEL F. DALTON, of Waterbury, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Extension- Brackets, of which the 'following is a full, clear, and exact description, whereby anyone skilled-in the art can make and use the same.

My invention relates to the class of devices 1o that are used to support curtain-poles or the like; and my object is to provide a bracketl of this class that shall be adjustable as to length and provided with cheap, simple, and eectve clamping means.

My invention consists in the details of the several parts making up the extensible bracket and the clamp dev-ice, and-in their combinations, as more particularly hereinafter described, and pointed out in the claims. 2o 4 Referring to the drawings, Figure l is a top View of the preferredform of my irnproved bracket. Fig. 2 is a detail side View of the same. Fig. 3 is a detail view in crosssection, on'enlarged scale, through the body part of the bracket. Fig. 4 is a detail view, in lengthwise section, through the body part, showing the parts unclamped.'

In the accompanying drawings, the letter' a denotes a fixed bracket-section, and b the 3o sliding bracketsection, the former being preferably made in a tubular form, open on the outer end and having the inner end provided with an upturned foot a', provided with a hole through which a nail or screw may be passed for securing the bracket in place. This tubulaiportionv is preferably formed by rolling up a iiat sheet of metal, leavingv a slot a2, through which the handle of a cam-lever projects when the sliding part is in place. A brace c for the bracket is secured at one end to the outer end ot' the tubular part by clamping the arms c about it, while the inner end is provided with a foot c2, turned into the same plane as the foot on the horizontal part, and likewise provided with a hole for the passage of a nail or screw. This part is preferably formed of sheet metal made half-round in cross-section to give added strength and to enable it to conform more nearly to the outlines of the rest of the bracket.

The sliding part b of the bracket is preferably composed of a rod of metal of proper diameter to enable it to t readily within the tubular part, and the outer end is pro` 55 vided with a pole-socket d, that opens upward and has attached to the upright arm a clamp-screw e of ordinary construction, with the inner end adapted to be clamped upon the pole that rests in the socket, so as to 6o hold it against accidental removal. The inner end of the sliding part b is slotted and bears in the slot a cam-lever f, provided with a cam-surface f', that is adapted to be brought forcibly into contact with the inner surface of the tubular fixed part by swinging the lever on its pivot, so as to firmly clamp the two parts `of the bracket together and holdit to a certain length Within the limits of the sliding movement of thesection 7o b. The lever extending through the slot serves to hold the sliding section b against rotation, and it also provides a simple and etfective clamping means so arranged as not to mar or deface any visible portion of the bracket. The parts composing the iixed section are preferably made of sheet metal cut or stamped to size and then formed to shape, as illustrated, while the sliding sectionis composed of a piece of metallic rod or wire.

I claim as my inventionl. The extensible bracket composed of the main section having a tubular portion embracing the sliding section, the sliding section having on its outer end a pole-section and bearing on its inner end a clamp, and the clamp located on the sliding section, with the cam-surface bearing on the inside of the tubular part of the main section, all substantially as described. r

2. In an extensible bracket, in combination, a main section having the tubular horizontal part provided with a lengthwise slot kand the half-round brace, with clampingarms embracing the outer end of the tubular section, the sliding section having a polesocket and clamp-screw on the outer end and a clamp-socket on the inner end, and the cam-lever pivoted in the clamp-socket and having its cam-surface adapted to engage too theinner surface of the tube, all substantially as described.

DANIEL F. 'DAL'ION Witnesses'y WM. M. GILLETTE, CHAs. W. GILLETTE. 

